MAIN CATEGORIES:
 1. Population
2. Vital Statistics
3. Health and Nutrition
4. Education
5. Law Enforcement, Courts
and Prisons
6. Geography and Environment
7. Parks, Recreation, Travel
8. Elections
9. State and Local Government
Finances and Employment
10. Federal Government
Finances and Employment
11. National Defense and
Veterans Affairs
12. Social Insurance and Human
Services
13. Labor Force, Employment,
and Earnings
14. Income, Expenditures, and
Wealth
15. Prices
16. Banking, Finance, and
Insurance
17. Business Enterprise
18. Communications and
Information Technology
19. Energy
20. Science and Technology
21. Transportation - Land
22. Transportation - Air
and Water
23. Agriculture
24. Natural Resources
25. Construction and Housing
26. Manufactures
27. Domestic Trade and
Services
28. Foreign Commerce and Aid
29. Outlying Areas
30. Comparative International
Statistics
31. Industrial Outlook
32. 1997 Economic Census
|
|
988. Citations on U.S. Patents to the U.S. Scientific & Technical Literature, by Cited Field
[Citations to articles with authors in different sectors are assigned fractionally to participating sectors.Citations are to articles published in a twelve-year period, lagged by
three years from the patent data.For example, 1997 citations are to articles published in 1993-95]
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Number of citations to scientific and technical articles
|
|
|
|
|
|
|
|
|
|
|
Science field
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
1987
|
1988
|
1989
|
1990
|
1991
|
1992
|
1993
|
1994
|
1995
|
1996
|
1997
|
1998
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Total
|
8,618
|
9,498
|
12,988
|
12,936
|
15,720
|
19,425
|
26,721
|
27,437
|
32,536
|
47,142
|
74,839
|
108,335
|
|
|
Physics
|
1,286
|
1,595
|
2,356
|
2,169
|
2,424
|
2,667
|
3,024
|
3,589
|
3,366
|
3,506
|
4,150
|
4,719
|
|
|
Chemistry
|
1,181
|
1,212
|
1,536
|
1,673
|
1,921
|
2,451
|
3,027
|
3,114
|
3,689
|
4,535
|
6,218
|
6,900
|
|
|
Earth & space science
|
105
|
81
|
119
|
76
|
123
|
94
|
93
|
122
|
134
|
195
|
207
|
285
|
|
|
Mathematics
|
0
|
2
|
2
|
3
|
2
|
18
|
21
|
14
|
19
|
25
|
30
|
35
|
|
|
Biology
|
168
|
220
|
304
|
306
|
437
|
436
|
548
|
677
|
812
|
1,349
|
1,508
|
2,426
|
|
|
Biomedical research
|
2,390
|
2,749
|
3,976
|
3,818
|
5,199
|
6,945
|
10,735
|
10,332
|
12,719
|
20,646
|
36,397
|
55,891
|
|
|
Clinical medicine
|
2,221
|
2,423
|
3,190
|
3,415
|
4,205
|
5,293
|
7,393
|
7,215
|
9,173
|
13,637
|
22,649
|
33,437
|
|
|
Engineering technology
|
1,242
|
1,209
|
1,458
|
1,443
|
1,401
|
1,492
|
1,850
|
2,346
|
2,593
|
3,207
|
3,589
|
4,452
|
|
|
Psychology
|
21
|
3
|
38
|
30
|
2
|
24
|
26
|
15
|
25
|
11
|
52
|
91
|
|
|
Social sciences
|
1
|
0
|
2
|
0
|
0
|
1
|
0
|
0
|
0
|
1
|
0
|
10
|
|
|
Health & professional fields
|
1
|
2
|
4
|
1
|
2
|
1
|
0
|
10
|
2
|
24
|
33
|
88
|
|
Source: CHI Research, Inc., Haddon Heights, NJ; Science Indicators Database; and U.S. National Science Foundation, special tabulation.
http://www.nsf.gov/sbe/srs/stats.htm
https://allcountries.org/uscensus/988_citations_on_u_s_patents_to.html
These tables are based on figures supplied by the United States Census Bureau, U.S. Department of Commerce and are subject to revision by the Census Bureau.
Copyright © 2019 Photius Coutsoukis and Information Technology Associates, all rights reserved.
|
